先学后教,不是让学生没有目的的先学,而是在教师指导下的先学,把握高效起点以帮助学生激活已知,并根据学生自主质疑的情况及时调整导学,组织学生高效展示,给学生时间和空间,让学生在应用中发生思想碰撞,形成自己的知识建构,也为教师的后教打下基础。 It is not a precondition for students to have no purpose but a precondition of under the guidance of a teacher. They should grasp the effective starting point to help students activate their known knowledge and timely adjust their guidance according to the students’ questions on their own. , Give students time and space, so that students in the application of the collision of ideas to form their own knowledge building, but also lay the foundation for the teaching of teachers.